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Fix delay() 

Somewhat amazingly it went unnoticed that the delay() function
doesn't actually cause the task to block.  Since the task state
is never changed from TASK_RUNNING before schedule_timeout() the
scheduler allows to task to continue running without any delay.
Using schedule_timeout_interruptible() resolves the issue by
correctly setting TASK_UNINTERRUPTIBLE.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Brian Behlendorf 2013-05-01 16:20:28 -07:00
parent f6437b60c2
commit ab59be7bc7
1 changed files with 1 additions and 1 deletions
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2
include/sys/timer.h
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@ -35,7 +35,7 @@
#define ddi_get_lbolt() ((clock_t)jiffies) #define ddi_get_lbolt() ((clock_t)jiffies)
#define ddi_get_lbolt64() ((int64_t)get_jiffies_64()) #define ddi_get_lbolt64() ((int64_t)get_jiffies_64())
#define delay(ticks) schedule_timeout((long)(ticks)) #define delay(ticks) schedule_timeout_uninterruptible(ticks)
#define SEC_TO_TICK(sec) ((sec) * HZ) #define SEC_TO_TICK(sec) ((sec) * HZ)
#define MSEC_TO_TICK(ms) msecs_to_jiffies(ms) #define MSEC_TO_TICK(ms) msecs_to_jiffies(ms)